#user  nobody;
worker_processes auto;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections 10024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    log_format  main  escape=json '{ "@timestamp": "$time_local", '
                         '"remote_addr": "$remote_addr", '
                         '"upstream_addr": "$upstream_addr",'
                         '"remote_user": "$remote_user", '
                         '"body_bytes_sent": "$body_bytes_sent", '
                         '"request_time": "$request_time", '
                         '"status": "$status", '
                         '"request": "$request", '
                         '"request_method": "$request_method", '
                         '"http_referrer": "$http_referer", '
                         '"http_x_forwarded_for": "$http_x_forwarded_for", '
                         '"http_user_agent": "$http_user_agent",'
                         '"http_uri": "$uri",'
                         '"http_host":"$http_host",'
             '"req_header": "$req_header",'
                         '"resp_body":"$resp_body" }';

    access_log  logs/access.log  main;

    client_max_body_size 20m;
    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;

    #gzip  on;
    include /usr/local/openresty/nginx/conf/conf.d/*.conf;
}

server {
    listen 10001;
    lua_need_request_body on;

    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Real-Port $remote_port;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    set $req_header "";
    header_filter_by_lua '
        local head = ngx.req.get_headers()
        for k,v in pairs(head) do 
            ngx.var.req_header = ngx.var.req_header .. string.format("%s : %s, ",k,v)
        end 
    ';

    set $resp_body "";
    body_filter_by_lua '
        local resp_body = string.sub(ngx.arg[1], 1, 1000)
        ngx.ctx.buffered = (ngx.ctx.buffered or "") .. resp_body
        if ngx.arg[2] then
            ngx.var.resp_body = ngx.ctx.buffered
        end
    ';

    location / {  
        default_type text/html;
        content_by_lua '
            ngx.say("<p>Hello, World!</p>")
        ';
    }
}